Slip-joint-coupling nut.



A. G. SGHUERMANN.

SLIP JOINT COUPLING NUT.

APPLIOATION FILED our. 26, 1911.

1,063,926, Patented June 3, 1913.

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ANTON C, SCH UEEIEANN, 0F DECATUR, ILLINOIS, ASSIGNOR T0 H. MUELLER MFG.00.,

0F DECATUR, ILLINOIS, A CORPORATION OF ILIJQNOIS.

SLIP-JOINT-COUPLING NUT.

Specification of Letters Patent.

Patented June 3, 1913.

Application filed Dctober 26, 1911. Serial No. 858,910.

To all whom it may concern:

Be it known that I, Ann: C. Somme- MANN, a citizen of the United States,residing at Decatur, in the county of Macon and State of Illinois, haveinvented new and useful Improvements in. Slip-Joint- Coupling Nuts, ofwhich the following is a specification.

My present invention relates to certain new and useful improvements inslip joint coupling nuts especially designed for uses wherein it isdesired to couple together two telescoping pipe sections, as forinstance a service and a supply-pipe, or a supply-pipe and faucet-spudor tail-piece, or both, the object of the invention being to provide acoupling that will eiiectually prevent blowouts.

ln the prior constructions with which I am acquainted and wherein anattempt has been made to prevent blowouts in the pipe connections, it isthe usual practice to provide the telescoping pipe-section with a fixedcollar, which forms a part of the pipe itself, and which collarconstitutes a shoulder serving as a stop or abutment for the couplingnut. Such collar construction serves the purpose for which it isintended, but is objectionable because the extent or degreeof-penetration of one pipe within the other is fixed and limited, thuspreventing adjustments being made between the pipes which adjustmentsare almost always required owing to variations in the dillerentinstallations, especially where cmincction is being made between asupply-pipe and a service-pipe, or between a supply'pipc and faucet-spudor tail-piece, or between the op posite ends of a supply-pipe and aservicepipe and faucet-spud or tail-piece respectively.

According to the present invention I provide a coupling-nut whichcarries a lockingring or collar that permits free adjustable penetrationof one pipe within another and which ring or collar may be cause to gripor grasp one of the pipes in such a manner as to form, in efi'ect, afixed collar, such as will, with the aid of the coupling nut, securelycouple the two pipe-sections in adjustable relationship and obviate anyliability of blow-outs.

i the accompanying drawing which is illn.- 'ative of a preferredembodiment of invention, Figure 1, is a plan new oil the several partscomprising my improved coupling nut, the parts being separated. Fig. 2,is a longitudinal sectional view of the coupling nutshown in appliedposition. Fig. 3, is a plan view of the l0ck1n'g.ring or collar, andFig. 4, is a longitudinal sec tional view showing the use of my improvedcoupling-nut in connection with a common form of supply pipe, the latterbeing coupled at its opposite ends to a faucet-spud or tailpiece and aservice pipe respectively.

In the said drawing the reference numeral 1, designates a pipe section,as for instance, a supply-pipe, which is shown as telescoping intoanother pipe, 2, as for instance a servicepipe, faucet-spudentail-piece, the end of said pipe 2, being externally threaded asshown.

The reference letter A', designates generally, my improved coupling nutwhich comprises a nut 3, having the usual wrench gripping faces andwhich is interiorly threaded as shown at 4, whereby said nut may bescrewed onto a pipe section such as 2. Within the nut there is ashoulder 5, forming a seat for a packing ring 6, interposed between saidshoulder aud the end of the pipe 2, in order to make a fluid-tight jointat the point where the packing-ring embraces the telescoping pipe, asindicated by the reference numeral 1. The said not 3, is provided withan'extension 7, internally threaded at its outer end, as at 8, toreceive the threaded portion 5), of a 'l'ollou'cr-uut l and at the baseof said threaded poi-lion 8, there is formed an annularbeveled seat 12,which is located opposite to, but in line with the saidpacking-ring-shoulder or seat 5. Resting upon and supported by the saidbeveled annular seat '12, is a splil nictal ring or collar 13,preferably having a beveled wall 14, which contacts with the saidbeveled seat 19, said beveled seat and beveled wall 14 serving to causethe split ring 13, to contract under pressure exerted thereupon by thefollower nut 10, and firmly grip the pipe section 1, and thus holdthetwopipe sections 1, and 2, against longitudinal separation.

In order to cause the split ring or collar 13, to more firmly grip thepipe-section 1, I prefer to provide the same with one or more bitingedges or portions 15, which edges or portions will, when the ring orcollar is caused to contract under the force of the follower-nut, biteinto the wall of the pipe-section 1, which is usually of antill ltltinealed tubing, as when the pipe section is a commercial supply-pipe, andbecome, what is to all inmnts and purposes a fixed collar.

My improved coupling-nut will be made of standard sizes to fit thestandard. sized service-pipes and faucet-spuds or tail-pieces now foundupon the market and as already installed, thus it will be possible, withmy improvement, to make a practically blowout-proof connection at eitherone or both ends of the supply-pipe and at the same time enable properpenetration adjustments to be made between thepipes.

Again, as shown in Fig. l, my improved coupling nut A, may be used togreat advantage with the present types of. supply-pipes which have afixed collar 1*, and lead cone packing ring 1 .at one end, but whichhave no means at the op osite end to prevent blow-outs at such en @wingto the varying conditions that exist in the different plumbinginstallations, dueto the use of different makes and styles of bath-tubswhich differ in height from the door to the opening formed for thefaucet shank, and due also to the fact that the service pipes do notalways project through the door or wall to the same extent, it ispractically impossible to provide a commercial supply-pipe-with a fixedcollar at both ends such as will universally meet the demands of thetrade, hence it has been the practice to provide these-supply-pipes witha collar at one end only, leavingthe other end to be coupled in theusual way, as by a slip-joint coupling nut, but with such a nut there isalways present the danger of a blow-out, which my improved coupling nutobviates and which also enables proper penetrating or telescopingadjustments to be made to suit the varying conditions found to exist inthe different installations.

From the foregoing description of the device talren in connectionwith'the drawings it will be seen that after the pipes have beenproperly positioned with reference to one another the coupling nut 3 istightened up,

and this serves to compress the packing ring- 6, thereby making afluid-tight joint. This flu ld-tight join-t having been made the splitgrippmg rlng 13 is placed in proper positron, andthe locking nut 10screwed home, which last operation causes the gripping ring 13 to embeditself into the pipe, thereby locking the two pipes into the desiredposition after the fluid-tight joint has been made.

What I claim is 1. In a slip joint coupling, the combination with a pipehavingexternalthreads upon its end and a second pipe of reduced diametertelescoping into said first pipe, and having an exterior smooth surface,of a coupling member threaded upon the first pipe and having an inwardlyextending flange with a flat face opposed to the end of the externallythreaded pipe and adapted for snug engagement against saidtelescoppressed against said threaded pipe upon the screwing of saidmember upon the pipe, said member also having an integral threadedextension surrounding the telescoping pipe, said fiange having aninclined wall facing outward through the extension, a split ring formedwith an annular bitihg edge and arranged in the extension against theinclined face and a gland nut embracing said telescoping pipe andbearing against said ring, whereby to compress thelatter against theinclined face and force said biting edge into frictional contact withthe telescoping pipe to securely lock the same against longitudinalmovement.

2, ln a slip joint coupling and in combination, an outer pipe, a pipetelescoping into said outer pipe, a coupling member secured to the outerpipe and having a straight shoulder facing the end thereof, a packingbetween the end of the outerpipe and said shoulder and adapted to becompressed against said end by the coupling member, said coupling memberalso having an inwardly inclined shoulder, a loclring member formed witha biting edge and bearing on the inclined shoulder, and ,a nut on thecoupling member engaging the locking memher and compressing the sameagainst the inclined shoulder whereby to force said biting edge intofrictional contact with said telescoping pipe thereafter and securelylock the same against movement.

3. ln a slip-joint coupling and in combination, an outer pipe, a pipetelescoping into said outer pipe, a coupling member secured to the outerpipe and having a straight shoulder facing the end thereof, a packingbetween the end of the outer pipe and said shoulder adapted to becompressed against said end by the coupling; member, said couplingmember also having an inwardly inclined shoulder, a locking memberformed with a biting edge bearing on. the inclined shoulder, and a nuton the coupling member engaging the locking member and compressing thesame against the inclined shoulder mg pipe, a packing carried in saidmember against saidfiat face and adapted to become" to force said bitingedge into intimate contact with said telescoping pipe whereby to distortthe pipe and render the same incapableof longitudinal displacement.

In testimony whereof I have hereunto set my hand in presence of twosubscribing witnesses.

ANTON, U. SCHRMANN.

\VVitnesses WILLIAM R. lBmnLn, Lnow'ano F. l /lCBEN.

